Biosecurity on a Poultry Farm in Ghana: A Practical Guide

Why biosecurity starts at the farm gate

Most poultry diseases do not arrive as a dramatic event. They travel quietly on boots, on crates, on the wheels of a car that drove past another farm, on a rat that found the feed store, or on a chick that was already carrying something when it left the hatchery. By the time a bird shows signs, the infection has often spread to others. Biosecurity is the set of habits that makes that journey harder at every step.

Think of biosecurity as a series of gates rather than a single wall. The first gate is the farm entrance, where vehicles and visitors are controlled. The second is the boundary of each house, where people change boots and wash hands. The third is the house itself, where birds are protected from wild birds, rats and contaminated litter. Each gate catches some of the risk. Together they catch most of it.

It is worth saying clearly that biosecurity is not expensive in most cases. A footbath, a visitor log, a bucket of clean water, a gate that closes and a rule that visitors do not walk from one house to another cost very little. The expensive part of disease is the birds you lose, the treatment, the time, and the eggs and growth you never get back. We set out the basic routines below so that farmers can apply them on their own sites.

Map your farm into zones

The simplest biosecurity plan starts with a map. Draw your farm and mark three zones. The clean zone contains the houses and the chick and feed stores, and only people who work with the birds should enter it. The buffer zone is the working area between the clean zone and the outside world, where vehicles unload and where tools and crates are cleaned. The dirty zone contains the manure heap, the dead bird pit or compost, and the wash area for used equipment.

The rule is that people, equipment and waste move in one direction only, from clean to dirty, and never back. A worker who handles dead birds in the dirty zone should not walk back into the clean zone without changing clothes and boots and washing hands. A tractor that brings manure in should not go straight to the houses. Once you have drawn the map, put signs at the boundaries so that visitors and new staff understand where they are allowed to go.

Zones also help when you plan the farm layout. Place the feed store and the chick reception area near the buffer zone so that delivery vehicles do not drive through the houses, and keep the manure heap downwind and well away from the birds. Our guide to poultry housing designs covers the placement of the houses themselves.

Footbaths and boot changes done properly

Footbaths are the most visible biosecurity measure and the most often misused. A footbath placed in the wrong spot, filled with dirty water or never refilled does almost nothing. Disinfectant works on clean surfaces, so the boots must be cleaned first. Scrape off mud and litter, brush the soles, and then step through the disinfectant. A footbath full of dirt is no better than a bowl of water.

Place the footbath where people must step, at the single entrance to the house or to the clean zone, and never beside the path where they can walk around it. Fill it with fresh solution each morning and whenever it becomes dirty. Use a disinfectant registered for poultry use and mix it at the dilution printed on the label. Do not mix several products together, and do not guess the strength. Follow the label, and keep the container closed and out of reach of children.

Boot changes are better than footbaths alone. Keep a pair of boots at the entrance to each house for the people who work inside, and leave them there. Visitors can wear disposable overshoes or borrow clean boots. Staff who go from house to house should change boots in between, or at least clean them thoroughly, because the boots carry the litter from one house to the next.

• Scrape and brush boots before they touch the footbath.
• Place the footbath at the entrance people must use.
• Refresh the solution each morning and when it looks dirty.
• Use a registered poultry disinfectant at the label dilution.
• Keep a set of house boots at the entrance for staff and visitors.

Managing visitors and vehicles

Visitors are one of the most common routes for disease into a farm. A visitor may have been on another farm the same morning, may carry crates or equipment, or may simply walk through the litter without thinking. The safest rule is that visits happen by appointment, and that visitors who have been on other poultry farms in the previous few days are not allowed into the houses at all. This may feel strict, but it protects your birds and your business. At Halaal Farms, farm visits by appointment are the norm for the same reason.

Keep a visitor log at the entrance. Record the name, phone number, the farm they came from, the date and time, and whether they had contact with other birds. The log is useful beyond biosecurity too: if something goes wrong, you can see who was on site. Ask visitors to sign it and to change footwear before they go further.

Vehicles are harder to control, because they carry feed, chicks, crates and manure. Stop delivery vehicles at the buffer zone. The driver should not enter the clean zone, and the vehicle should be washed and disinfected before it leaves the farm. If a vehicle has visited another poultry farm, park it outside the buffer zone and do not bring it into the working area.

When you receive chicks, keep the delivery area separate from the houses. Open the boxes in the buffer zone, check the count, and move the chicks into the brooder with clean hands and clean equipment. Our note on how to transport day-old chicks explains the handling practices that protect the birds on the road.

All-in-all-out: the routine that does the most

If you adopt one routine from this article, make it all-in-all-out. The idea is simple. You bring in a single age group of birds to a house, raise them together, sell them together and then empty the house completely before the next group arrives. Mixed-age flocks let disease circulate between older and younger birds, and the young birds are the most vulnerable. Breaking the cycle gives each house a chance to reset.

The empty period is where the work happens. Remove all birds, equipment and litter. Wash the house from the roof down, then the walls, then the floor, using water and a detergent, and let it dry. Disinfect once the surfaces are clean, because disinfectant on dirt does little. Then leave the house empty for a rest period before the next flock arrives. Many farms rest a house for a week or two, and longer where disease pressure has been high. Ask your vet to set the length for your situation.

Tell your neighbours and your suppliers when you are empty, and plan the delivery of the next chicks around the rest period. Our day-old chicks leave the hatchery on the day they hatch, so the rest period has to finish before the order is due. Timing the rest period around the chick order is the difference between a smooth restart and a rushed one.

Rodents, wild birds and insects

Rats are a serious threat on any farm. They eat feed, spoil what they leave, carry disease and can kill young chicks. A rat that finds a gap at the bottom of a door or a hole in a block wall will bring others. Seal gaps larger than a few millimetres, keep the feed store closed and off the floor, and clear rubbish and long grass around the buildings. Use rodent control products according to their label and place them where children and pets cannot reach them. Remove dead rodents promptly, because they attract insects and can contaminate litter.

Wild birds, particularly sparrows, pigeons and weaver birds, can bring disease into the house and share feed with the flock. Keep the house sides covered with mesh that stops birds entering, and keep feed spills swept up. Open-sided houses are useful for ventilation, but they should not be open to wild birds at feeding level.

Flies and other insects spread disease and multiply in wet litter and manure. Keep litter dry, remove manure regularly, and use fly control measures that are safe for birds and approved for poultry. A clean house with dry litter is the best control of all, because insects need moisture to breed.

Look for signs of rodents and wild birds during your daily walk around the house. Droppings, chewed bags, nests under the roof and fresh burrows are the usual signs. Catch problems early and they are simple to fix.

Feed, water and litter as carriers of disease

Feed, water and litter are easy to overlook because they are essential. Any of them can carry disease if they are handled carelessly. Buy feed from a supplier you trust, check the bags for signs of damp or rodent damage, and store them on pallets in a clean, dry store. Do not reuse feed sacks for other purposes near the houses, and keep the bags closed.

Water is a common route for disease in the rainy season, when surface water runs into wells, tanks and pipes. Use a clean, tested supply, keep water tanks covered, and clean drinkers regularly. Drinkers placed too low or without drip trays allow litter and droppings to foul the water. Check the water line and the drinker design when the house is set up.

Litter brought from another farm can carry disease into a clean house. Avoid buying used litter, or if you must use it, make sure it comes from a farm with a good health record and is dry and clean. Litter you produce yourself is safer, but it still needs management, and manure must be removed from the site and not stacked near the houses.

Dead birds and waste disposal

Dead birds carry the highest concentration of disease on a farm. They must be removed promptly, handled with gloves and disposed of in a way that does not spread the problem. Keep a sealed container or a covered area in the dirty zone for dead birds, and check it every day. Do not leave carcasses in the house or throw them into open water, a ditch or a rubbish heap that dogs and rats can reach.

Disposal methods depend on local rules and on the scale of your farm. Deep burial in a pit away from water sources, covered with lime and soil, is common on small farms. Composting in a sealed system is another option where it is permitted. Follow the rules in your district and keep a record of mortality, which we return to in our article on poultry record keeping.

Manure is also a disease risk, and its disposal needs the same care. Remove it from the houses regularly, store it in the dirty zone away from the houses and water sources, and do not sell or give it away from the farm during an outbreak without advice from your vet. Wash the equipment used for manure separately from the equipment used in the clean zone.

An avian influenza note: what to watch for

Avian influenza is a viral disease that can spread quickly between farms, and it can cause severe losses in a short time. It is a reportable disease in many countries, which means that suspected cases must be reported to the veterinary authorities so that the spread can be controlled. This article does not replace official advice, and the situation changes over time, so ask your vet or your district veterinary office for current guidance.

Watch for these warning signs in a flock: a sudden drop in feed or water intake, a sharp fall in egg production, unusual or sudden deaths, swelling around the head and face, a bluish or dark colour to the comb and wattles, coughing, sneezing, nasal discharge, or birds that huddle and stop moving. Several of these signs also appear in other diseases, so the answer is not to guess but to call a vet quickly.

If you see these signs, act at once. Separate sick-looking birds from the rest if you can do so safely, limit movement in and out of the house, and do not move birds, eggs, manure or equipment off the farm until your vet has advised you. Keep visitors out, and wash and disinfect boots and hands between each house. Do not sell birds or eggs from a flock showing these signs. Report the problem to your vet or the veterinary office in your district without delay, because early reporting protects other farms too.

Biosecurity is what gives you time to act. Clean entrances, controlled visitors and a clean house with a rest period all reduce the chance that disease reaches your flock in the first place, and they reduce the chance that your flock spreads disease to others.

Vaccination is part of biosecurity, not a replacement

Vaccination protects birds against specific diseases, and it is a central part of flock health. At our hatchery we vaccinate chicks against Marek's disease, Newcastle disease, Gumboro disease, infectious bronchitis and coccidiosis, and we provide a batch record with each order so that you know what has been given and when. That record is the starting point for your own vaccination plan with your vet.

Vaccination does not make biosecurity unnecessary. A vaccine works best in a healthy bird in a clean environment, and no vaccine covers every disease or every strain. A flock exposed to heavy disease pressure from dirty entrances, rats and mixed-age housing can still suffer losses, even if its vaccines were given correctly. Think of vaccines as one layer of protection and biosecurity as the others.

Follow your vet's schedule for every vaccine after the hatchery. Timings differ by disease, by the type of bird, and by the disease pressure in your area, so the dates must be set for your flock. Keep the vaccine records together with the batch record and your mortality and feed records, so that your vet can see the whole picture when they visit. Our guide to Newcastle disease prevention and our note on Gumboro disease give more background on two of the diseases most farmers ask about.

Staff habits and personal hygiene

Your staff are part of your biosecurity plan, for better or worse. A worker who helps on a neighbouring farm in the morning and comes to your houses in the afternoon can carry disease without knowing it. Ask staff to avoid other poultry premises on working days, or at least to change clothes and footwear before coming on to your farm.

Provide a place to wash hands, with soap and clean water, at the entrance to the clean zone and at each house door. Provide clean overalls or aprons for work in the houses, and ask staff to leave them at the farm, not to take them home. Make handwashing part of the routine, and check that it happens. Simple habits, repeated each day, are more effective than a rule written once and forgotten.

Train staff to recognise the warning signs in the flock and to report them immediately. A worker who notices a bird that is off its feed in the morning is your best early warning, but only if they feel safe to report it. Reward reporting, and never punish a worker for raising a concern.

Biosecurity checklist for every week

Use this checklist as a weekly routine, and walk the farm with it once a month to check how well it is working. Keep a signed copy in the office so that visitors, staff and your vet can see what is being done.

• Footbaths are filled with fresh disinfectant at the label dilution.
• Visitor log is complete, and visitors have been asked about other poultry contact.
• Vehicles stop at the buffer zone and are cleaned before leaving the farm.
• Staff boots are kept at the house entrances and changed between houses.
• Dead birds are removed daily and disposed of according to local rules.
• Manure is removed from the houses and stored in the dirty zone, away from water.
• Feed bags are closed, stored on pallets and checked for rodent damage.
• Rodent bait and traps are checked and placed where children and pets cannot reach them.
• Gaps in doors, walls and vents are checked and sealed.
• Water tanks are covered and drinkers are clean.
• Any sudden fall in intake, egg output or unusual deaths has been reported to the vet.
• Vaccination and batch records are filed with the flock's other records.

Biosecurity works best when the habits are simple enough to keep on a busy day. If you want help setting up the routines for a new house, you can reach us on WhatsApp at +233 24 915 1503, and you can read more about the hatchery and how we work. For delivery of day-old chicks, including the dispatch and handling notes that protect them on the road, see our delivery page, and when you are ready to order, use our order form.

Questions farmers ask